Abstract #2406
Pre-scan with half-sized phase encoding blips reducing ghost and slice leakage artifacts in dual-band EPI
Hiroshi Toyoda 1 , Naoya Yuzuriha 2 , Sosuke Yoshinaga 2 , and Hiroaki Terasawa 2
1
Center for Information and Neural Networks,
National Institute of Information and Communications
Technology, Suita, Osaka, Japan,
2
Department
of Structural BioImaging, Kumamoto University Graduate
school of Pharmaceutical Sciences, Kumamoto, Japan
The purpose of this study was to reduce ghost artifacts
due to phase correction error and to reduce slice
leakage artifacts in dual-band EPI, using pre-scans with
a half-sized phase encoding (PE) blips technique. A
phantom and in vivo rat brains were scanned using a
custom single-shot dual-band 2D-EPI sequence with
blipped-controlled aliasing (CAIPI) on a 7T animal
scanner. The pre-scans with half-sized PE blips were
useful to achieve accurate phase correction in EPI, and
to estimate coil sensitivity profiles for each slice,
resulting in the reduction of slice leakage artifacts in
dual-band EPI with CAIPI.
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